Patent EA-004116-B1 (EA)
Title: Transmission assembly with infinitely variable and constant transmission modules
Inventor: OTTEN ULRICH
IPC: F16H57/033
Filed: 2001-09-12
Abstract: 1. A transmission assembly comprising an infinitely variable transmission component and a constant transmission component wherein the transmission components are designed as modules, the variable transmission module (36) is a self-contained, functional transmission unit within a variable transmission housing open on at least one side and comprising a flange (16), with at least one infinitely variable output shaft (22) of the infinitely variable transmission module (36) extending within the flange area, while the flange (16) is used for the attachment of one of a plurality of constant transmission modules (38, 40, 64, 74, 76, 84, 88, 90, 94) of different power categories as desired and/or different steps. 2. The transmission assembly according to claim 1 wherein a transmission input shaft (18) enters the variable transmission housing on the side opposite the flange (16) and extends through the infinitely variable transmission module (36) and the constant transmission module is arranged spatially after the variable transmission module (36). 3. The transmission assembly according to claim 2, wherein the transmission input shaft (18) serves as an input shaft both for the variable transmission module (36) and for the constant transmission module (74, 84, 88, 94). 4. The transmission assembly according to any one of claims 1-3, wherein a shaft section extends from the input side to the output side of each transmission module, such that when the transmission modules are assembled together the shaft sections are aligned and in drive connection with one another, the shaft sections serve as drive shafts for an auxiliary drive. 5. The transmission assembly according to any one of claims 3 or 4, wherein at least one constant output shaft (20) extends through the flange area of the variable transmission module (36) which is in drive connection with an input shaft (18) of the variable transmission module (36), which arranged on one line with it or parallel to it and which serves to drive the constant transmission module (74, 84, 88, 94) positioned after the variable transmission module (36). 6. The transmission assembly according to any one of claims 1-5, wherein at least one infinitely variable output shaft (22)of the variable transmission module (36) extends with a parallel shift relative to the input shaft (18) or extends as a hollow shaft, concentric to a constant output shaft (20) of the variable transmission module (36). 7. The transmission assembly according to any one of claims 1-6, wherein the variable transmission module (36) comprises two hydrostats (26, 32) with shafts arranged parallel relative to each other wherein one hydrostat is designed as a pump (26) with adjustable vanes, the other hydrostat is a constant engine (32) or a servo-motor, both hydrostats are fixed on a mounting plate. 8. The transmission assembly according to any one of claims 1-7, wherein the variable transmission module (36) is designed as a hydrostatic unit module and a hydrostatically driven output shaft (22) of the hydrostatic unit module (36) is formed as a hollow shaft, through which a constant output shaft (20) of the hydrostatic unit module (36) extends concentrically. 9. The transmission assembly according to any one of claims 7or 8, wherein the variable transmission housing includes a valve housing on its side facing away (12) from the flange (16) which serves to supply oil to the hydrostatic unit (36). 10. The transmission assembly according to any one of claims 1-9, wherein the constant transmission module (74, 84, 88, 94) comprises a summation gear that combines the output power the infinitely variable output shaft (22) of the variable transmission module (36) with the output power of a constant output shaft (20) of the variable transmission module (36), and the summation gear housing comprises an input flange (77) adapted to be attached to the flange (16) of the variable transmission housing. 11. The transmission assembly according to any one of claims 1-10, wherein a planetary transmission module (74, 84, 88, 94) operable as a summation unit is disposed after the variable transmission module (36) and has an input flange (77) adapted to be attached to the flange (16) of the variable transmission housing. 12. The transmission assembly according to any one of claims 1-11, wherein the constant transmission module, in particular a planetary transmission includes one, two, three or four gear ratios and/or a reversing unit and/or a clutch. 13. The transmission assembly according to any one of claims 1-12, wherein a first constant transmission module (74, 84, 88, 94) has an input flange (44, 77) for mounting to the flange of the variable transmission module and an output flange (46, 79) opposite its input flange to which other constant transmission modules (40, 64, 76, 90, 98) of different power categories can be connected. 14. The transmission assembly according to any one of claims 1-13, further comprising another constant transmission module, which as a range module (40, 64, 76, 90) having at least one range. 15. The transmission assembly according to any one of claims 1-14, further comprising a range module having an input flange (48) attached to an output flange (46) of the constant transmission module, in particular, the summation gear housing or the constant transmission module and the input shaft of the range module being in drive connection with an output shaft of the constant transmission module. 16. The transmission assembly according to claim 15, wherein the range module comprises an output flange (54) essentially opposite its input flange (48) which can be connected to a differential housing flange of a vehicle rear axle and an output shaft (58), which can be connected in drive connection to a differential shaft. 17. The transmission assembly according to any one of claims 1-16, wherein the constant transmission module and the range module are arranged in a common housing member (81), wherein the common housing member (81) having at its opposite ends an input flange (87) and an output flange (87) and a partition wall (83) in a central area. 18. The transmission assembly according to any one of claims 1-17, further comprising a partition wall (83) is formed between at least two transmission modules (36, 38, 40, 64, 74, 76, 84, 88, 90, 94) which prevents the penetration of lubricant between the two transmission units (36, 38, 40, 64, 74, 76, 84, 88, 90, 94). 19. A kinematic row, comprising transmissions of different performance classes, all transmissions of which having a similar infinitely variable transmission module (36) and a constant transmission modules (38, 40, 64, 74, 76, 84, 88, 90, 94) and/or range modules of different performance classes and/or different steps. 20. The kinematic row according to claim 19, wherein the variable transmission module (36) is designed so that corresponds optimally to maximum performance class of the kinematic row. 21. The kinematic row according to any one of claims 19 or 20, wherein the constant transmission modules are arranged according to a number of steps, for increasing rated transmission power, transmission modules with increasing number of transmission steps are chosen.